A song not among his top 20 biggest hits (as it never charted on the Hot 100) is the holiday classic "Last Christmas," by Wham! The song is an annual favorite around Christmastime, and has gone as high as No. 5 on the weekly Holiday 100 chart in 2014, and climbed to No. 11 this holiday season on the chart dated Dec. 31. It ranks as the No. 10 all-time Holiday 100 tune.